CHEMICAL COMPOSITION OF MAIZE GRAIN 657 



Table XCVII. 

 CHEMICAL COMPOSITION OF HULL, EMBRYO AND ENDOSPERM. XIII.' 



Protein . 



Ash 



Fat ... 



Carbohydrates — 



Nitrogen-free Extract 



Crude Fibre . 



The chemical composition of the grain and its several parts 

 varies in different breeds and different strains. The following 

 is the percentage composition of an ear of medium protein- 

 content as ascertained by Hopkins (3) : — 



Table XCVIII. 



CHEMICAL COMPOSITION OF THE PHYSICAL PARTS OF THE 



GRAIN. 



Tip Cap 

 Hull ' . 

 Horny Gluten 

 Horny Starch 

 Crown Starch 

 Tip Starch 

 Germ 



Mixed Waste 

 Whole Kernel 



The percentage distribution of the total content of protein, 

 oil, ash, and carbohydrates through the different parts of the 

 grain is shown in the following table {Hopkins, 3): — 



Table XCIX. 



PERCENTAGE DISTRIBUTION OF THE CHEMICAL COMPONENTS 

 OF THE GRAIN. 



42 



